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Re: parsing time stamp


From: Kevin Rodgers
Subject: Re: parsing time stamp
Date: Thu, 22 May 2008 22:17:49 -0600
User-agent: Thunderbird 2.0.0.14 (Macintosh/20080421)

Johan Bockgård wrote:
Xah <address@hidden> writes:

is there a function that parses a timestamp like “Monday, Nov. 28,
1994” so that i can write a function to turn it into the format yyyy-
mm-dd?

parse-time-string

(parse-time-string "Monday, Nov. 28, 1994")
=> (nil nil nil 28 11 1994 nil nil nil)

Odd that the leading "Monday, " yields nil DOW...  It turns out that is
due to the fact that the parse-time-weekdays variable only has
abbreviations (e.g. "mon"), just like parse-time-months.  Easy to fix:

(let ((parse-time-weekdays (append parse-time-weekdays
                                   '(("sunday" . 0)
                                     ("monday" . 1)
                                     ("tuesday" . 2)
                                     ("wednesday" . 3)
                                     ("thursday" . 4)
                                     ("friday" . 5)
                                     ("saturday" . 6)))))
  (parse-time-string "Monday, Nov. 28, 1994"))
=> (nil nil nil 28 11 1994 1 nil nil)

--
Kevin Rodgers
Denver, Colorado, USA





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